<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <style id="demo"></style>
    <style>
      * {
        padding: 0;
        margin: 0;
        box-sizing: border-box;
      }

      *::after,
      ::before {
        padding: 0;
        margin: 0;
        box-sizing: border-box;
      }
    </style>
    <style>
      .Wrapper {
        display: flex;
        flex-direction: column;
        align-items: center;
      }
    </style>
    <style>
      .buttons {
        margin-top: 8px;
      }
      .buttons button {
        padding: 4px 8px;
        border: none;
        margin: 0 4px;
      }
    </style>

    <style>
      #demo2 {
        width: 480px;
        height: 30vh;
        overflow: scroll;
        margin-top: 10px;
        border-bottom: 1px solid #000;
        margin-bottom: 16px;
      }
      @media screen and (max-width: 500px) {
        #demo2 {
          width: 80%;
        }
      }
    </style>

    <div class="Wrapper">
      <div id="demo2"></div>
      <div class="buttons">
        <button id="btnPlay">播放</button>
        <button id="btnPause">暂停</button>
        <button id="btnSlow">慢速</button>
        <button id="btnNormal">中速</button>
        <button id="btnFast">快速</button>
      </div>
      <div class="dunWrapper">
        <div class="trunk">
          <div class="nose"></div>
          <div class="mouse"></div>
          <div class="eye"></div>
          <div class="eyeball"></div>
          <div class="highlight"></div>
          <div class="face"></div>
          <div class="ear"></div>
          <div class="handleft"></div>
          <div class="handright"></div>
          <div class="foot"></div>
        </div>
      </div>
    </div>
    <script src="./main.js"></script>
  </body>
</html>
